Fire-extinguishing compound.



UNITED STATES PATENT OFFICE.

JOSEPH TOMBEUR, OF BRUSSELS, BELGIUM.

FIRE-EXTINGUISHING COMPOUND.

SPECIFICATION forming part of Letters Patent No. 657,970, datedSeptember 18, 1900.

Application filed July 8, 1897. Serial 'H'o. 643,925- (No specimens.)

provide a. new and improved compositionadapted to be effectivelyemployed for extinguishing fire.

The new fire extinguishing compound is composed of a solution, in twentykilos of water, of sulfate of alumina, ten kilos; borate of sodium,sixteen hundred grams; boric acid,

eight hundred grams.

It is manifest that the above proportion may be varied without departingfrom the scope or sacrificing any of the advantages of the invention.

Before using the above solution I preferably add a certain amount ofwater to the same.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is-=- The new fire-extinguishing compound consistingof a solution in water of sulfate of alumina, borate of sodium and boricacid, mixed together in about the proportions herein set forth.

JOSEPH TOMBEUR.

